CVE-2026-47729
Squid: Memory disclosure in FTP gateway
Description
Squid is a caching proxy for the Web. Prior to 7.6, due to an improper validation of syntactic correctness of input in the FTP gateway (src/clients/FtpGateway.cc), Squid is vulnerable to an out-of-bounds read: when a listing entry date in the TypeA or TypeB directory-listing formats is not followed by a filename, parsing was not restricted to the input buffer, so a trusted client accessing a misbehaving FTP server through Squid's gateway feature could read memory from random unrelated transactions. This issue is fixed in version 7.6.
INFO
Published Date :
July 16, 2026, 5:16 p.m.
Last Modified :
July 20, 2026, 1:43 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Squid to version 7.6 or newer.
- Ensure FTP gateway input is validated.
- Limit client access to FTP servers.
Public PoC/Exploit Available at Github
CVE-2026-47729 has a 7 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-47729.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-47729 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-47729
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Read-only Linux host checker for supply-chain incident response, including vulnerable kernel posture, risky module state, and known developer-tooling persistence indicators
JavaScript PowerShell
Secure proxy solution with filtering, real-time monitoring and a modern web UI.
proxy proxy-configuration proxy-tool squid squid-proxy squid-proxy-security ui
Shell HTML Dockerfile CSS JavaScript TypeScript Go Makefile Python
A collection of Vulnerability Research and Reverse Engineering writeups.
None
Shell
一个 CVE 漏洞预警知识库，无 exp/poc，部分包含修复方案。A knowledge base of CVE security vulnerability, no PoCs/exploits.
SecDB - Security Feeds
cve security-feeds vulnerability
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-47729 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-47729 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 20, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions up to (excluding) 7.6 Added Reference Type GitHub, Inc.: https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/squid-cache/squid/pull/2408 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/squid-cache/squid/pull/2409 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/squid-cache/squid/releases/tag/SQUID_7_6 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrg Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-47729', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-16T17:52:23.166119Z'} -
New CVE Received by [email protected]
Jul. 16, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'squid-cache', 'product': 'squid', 'versions': [{'status': 'affected', 'version': '< 7.6'}]}] Added Description Squid is a caching proxy for the Web. Prior to 7.6, due to an improper validation of syntactic correctness of input in the FTP gateway (src/clients/FtpGateway.cc), Squid is vulnerable to an out-of-bounds read: when a listing entry date in the TypeA or TypeB directory-listing formats is not followed by a filename, parsing was not restricted to the input buffer, so a trusted client accessing a misbehaving FTP server through Squid's gateway feature could read memory from random unrelated transactions. This issue is fixed in version 7.6. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-125 Added CWE CWE-1289 Added Reference https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8 Added Reference https://github.com/squid-cache/squid/pull/2408 Added Reference https://github.com/squid-cache/squid/pull/2409 Added Reference https://github.com/squid-cache/squid/releases/tag/SQUID_7_6 Added Reference https://github.com/squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrg